Engine-Codes - Generic - B1428

B1428 - Ignition Switched Power Run/Crank Relay Circuit

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What is this?
Table of contents

B1428 Possible Causes

  • Faulty Ignition Switched Power Run/Crank Relay
  • Ignition Switched Power Run/Crank Relay harness is open or shorted
  • Ignition Switched Power Run/Crank Relay circuit poor electrical connection
  • Faulty Body Control Module (BCM)

How is the B1428 code repair?

Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

What is the cost to diagnose the B1428 code

Labor: 1.0

The cost to diagnose the B1428 code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.

Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

B1428 Meaning

The Body Control Module (BCM) controls the Run/Crank relay through the run/crank relay coil control circuit by applying voltage to the circuit. The Run/Crank relay is energized when the ignition switch is in ON or START, or when a remote start is requested. The OBDII codes set when the BCM detects a short to ground in the run/crank relay coil control circuit.

More Information

Need more information on how to fix the B1428 code?
Get Access to Factory Service Manuals

Information for specific makes

  • B1428 BUICK Ignition Switched Power Run/Crank Relay Circuit
  • B1428 CADILLAC Ignition Switched Power Run/Crank Relay Circuit
  • B1428 CHEVROLET Ignition Switched Power Run/Crank Relay Circuit
  • B1428 GMC Ignition Switched Power Run/Crank Relay Circuit

Need more help?

Get the B1428 code diagnosed by a professional: Find a repair shop in your area